I did the following:
- looked for the channel giving the most detail, which is the green channel.
- Image, Apply image and select the green channel
- In the layer palette set pick 'luminosity'
-Filter, sharpeing, smart sharpening 50%
I also increased the size a bit.
Hope you don't mind.

I sharpened the image using Sharpen command in Photofiltre. But before that, I changed the colour balance to create different coloring (the original is perfect, but I wanted something else). I changed gamma to the blue channel to 0.7 and revived colours a bit.
Jone, se nadevam ti se dopagja idejata.